4D= 256 số : 3235,3253,3230,3203,3285,3258,3280,3208,3735,3753,3730,3703,3785,3758,3780,3708,8235,8253,8230,8203,8285,8258,8280,8208,8735,8753,8730,8703,8785,8758,8780,8708,3237,3273,3232,3223,3287,3278,3282,3228,3737,3773,3732,3723,3787,3778,3782,3728,8237,8273,8232,8223,8287,8278,8282,8228,8737,8773,8732,8723,8787,8778,8782,8728,2367,2376,2362,2326,2317,2371,2312,2321,2867,2876,2862,2826,2817,2871,2812,2821,7367,7376,7362,7326,7317,7371,7312,7321,7867,7876,7862,7826,7817,7871,7812,7821,3337,3373,3332,3323,3387,3378,3382,3328,3837,3873,3832,3823,3887,3878,3882,3828,8337,8373,8332,8323,8387,8378,8382,8328,8837,8873,8832,8823,8887,8878,8882,8828,2293,2239,2298,2289,2243,2234,2248,2284,2793,2739,2798,2789,2743,2734,2748,2784,7293,7239,7298,7289,7243,7234,7248,7284,7793,7739,7798,7789,7743,7734,7748,7784,1491,1419,1496,1469,1441,1414,1446,1464,1991,1919,1996,1969,1941,1914,1946,1964,4491,4419,4496,4469,4441,4414,4446,4464,4991,4919,4996,4969,4941,4914,4946,4964,7491,7419,7496,7469,7441,7414,7446,7464,7991,7919,7996,7969,7941,7914,7946,7964,1406,1460,1401,1410,1456,1465,1451,1415,1906,1960,1901,1910,1956,1965,1951,1915,4406,4460,4401,4410,4456,4465,4451,4415,4906,4960,4901,4910,4956,4965,4951,4915,7406,7460,7401,7410,7456,7465,7451,7415,7906,7960,7901,7910,7956,7965,7951,7915